Massachusetts health officials have reported finding the West Nile Virus in Mosquitoes collected in the Jamaica Plain neighborhood outside Boston and on Cape Cod this summer. Other towns have already begun spraying as a precaution.
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West Nile cases in the U.S. continue to climb, jumping 25 percent in a week, with 1,993 cases nationwide and 87 deaths in the country’s worst outbreak for this time of year since the virus was detected here in 1999. NBC’s Brian Williams reports.

Related Photos

epa03367655 A handout image made available on 22 August 2012 from the Centers for Disease Control showing a Culex quinquefaciatus female mosquito feeding on human blood. This species is a known vector for West Nile Virus. The female C. quinquefasciatus mosquito is known as one of the many arthropoda

This undated photo provided by the Northwest Mosquito Abatement District shows a Culex pipiens, left, the primary mosquito that can transmit West Nile virus to humans, birds and other animals. It is produced from stagnant water. The bite of this mosquito is very gentle and usually unnoticed by peop